1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SYS_SHA2_H 27 #define _SYS_SHA2_H 28 29 #include <sys/types.h> /* for uint_* */ 30 31 #ifdef __cplusplus 32 extern "C" { 33 #endif 34 35 #define SHA2_HMAC_MIN_KEY_LEN 1 /* SHA2-HMAC min key length in bytes */ 36 #define SHA2_HMAC_MAX_KEY_LEN INT_MAX /* SHA2-HMAC max key length in bytes */ 37 38 #define SHA256_DIGEST_LENGTH 32 /* SHA256 digest length in bytes */ 39 #define SHA384_DIGEST_LENGTH 48 /* SHA384 digest length in bytes */ 40 #define SHA512_DIGEST_LENGTH 64 /* SHA512 digest length in bytes */ 41 42 #define SHA256_HMAC_BLOCK_SIZE 64 /* SHA256-HMAC block size */ 43 #define SHA512_HMAC_BLOCK_SIZE 128 /* SHA512-HMAC block size */ 44 45 #define SHA256 0 46 #define SHA256_HMAC 1 47 #define SHA256_HMAC_GEN 2 48 #define SHA384 3 49 #define SHA384_HMAC 4 50 #define SHA384_HMAC_GEN 5 51 #define SHA512 6 52 #define SHA512_HMAC 7 53 #define SHA512_HMAC_GEN 8 54 55 /* 56 * SHA2 context. 57 * The contents of this structure are a private interface between the 58 * Init/Update/Final calls of the functions defined below. 59 * Callers must never attempt to read or write any of the fields 60 * in this structure directly. 61 */ 62 typedef struct { 63 uint32_t algotype; /* Algorithm Type */ 64 65 /* state (ABCDEFGH) */ 66 union { 67 uint32_t s32[8]; /* for SHA256 */ 68 uint64_t s64[8]; /* for SHA384/512 */ 69 } state; 70 /* number of bits */ 71 union { 72 uint32_t c32[2]; /* for SHA256 , modulo 2^64 */ 73 uint64_t c64[2]; /* for SHA384/512, modulo 2^128 */ 74 } count; 75 union { 76 uint8_t buf8[128]; /* undigested input */ 77 uint32_t buf32[32]; /* realigned input */ 78 uint64_t buf64[16]; /* realigned input */ 79 } buf_un; 80 } SHA2_CTX; 81 82 typedef SHA2_CTX SHA256_CTX; 83 typedef SHA2_CTX SHA384_CTX; 84 typedef SHA2_CTX SHA512_CTX; 85 86 extern void SHA2Init(uint64_t mech, SHA2_CTX *); 87 88 extern void SHA2Update(SHA2_CTX *, const void *, size_t); 89 90 extern void SHA2Final(void *, SHA2_CTX *); 91 92 extern void SHA256Init(SHA256_CTX *); 93 94 extern void SHA256Update(SHA256_CTX *, const void *, size_t); 95 96 extern void SHA256Final(void *, SHA256_CTX *); 97 98 extern void SHA384Init(SHA384_CTX *); 99 100 extern void SHA384Update(SHA384_CTX *, const void *, size_t); 101 102 extern void SHA384Final(void *, SHA384_CTX *); 103 104 extern void SHA512Init(SHA512_CTX *); 105 106 extern void SHA512Update(SHA512_CTX *, const void *, size_t); 107 108 extern void SHA512Final(void *, SHA512_CTX *); 109 110 #ifdef _SHA2_IMPL 111 /* 112 * The following types/functions are all private to the implementation 113 * of the SHA2 functions and must not be used by consumers of the interface 114 */ 115 116 /* 117 * List of support mechanisms in this module. 118 * 119 * It is important to note that in the module, division or modulus calculations 120 * are used on the enumerated type to determine which mechanism is being used; 121 * therefore, changing the order or additional mechanisms should be done 122 * carefully 123 */ 124 typedef enum sha2_mech_type { 125 SHA256_MECH_INFO_TYPE, /* SUN_CKM_SHA256 */ 126 SHA256_HMAC_MECH_INFO_TYPE, /* SUN_CKM_SHA256_HMAC */ 127 SHA256_HMAC_GEN_MECH_INFO_TYPE, /* SUN_CKM_SHA256_HMAC_GENERAL */ 128 SHA384_MECH_INFO_TYPE, /* SUN_CKM_SHA384 */ 129 SHA384_HMAC_MECH_INFO_TYPE, /* SUN_CKM_SHA384_HMAC */ 130 SHA384_HMAC_GEN_MECH_INFO_TYPE, /* SUN_CKM_SHA384_HMAC_GENERAL */ 131 SHA512_MECH_INFO_TYPE, /* SUN_CKM_SHA512 */ 132 SHA512_HMAC_MECH_INFO_TYPE, /* SUN_CKM_SHA512_HMAC */ 133 SHA512_HMAC_GEN_MECH_INFO_TYPE /* SUN_CKM_SHA512_HMAC_GENERAL */ 134 } sha2_mech_type_t; 135 136 #endif /* _SHA2_IMPL */ 137 138 #ifdef __cplusplus 139 } 140 #endif 141 142 #endif /* _SYS_SHA2_H */ 143